Mind Crafting is a special ability usable while in the Dream World. It allows the user manipulation over the Dream World, this in turn may affect the real world. While it is mostly just Vampires with the ability to use mind crafting, Joe, Inner Joe and Samuel all appear to be able to access this ability to some extent.
Mind Crafting is to an extent a homage to the PC game MineCraft. Cubes are the main extent of Joe's crafting ability and all people created by him have the block-ish appearance and cannot talk, similar to the player's characters in the game.